Improvement in wagon-brakes



R. H. DEMENT.

Wagon Brak e. V r No."113,636. V Patented Apr. 11,1871.

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- hands/D sate ROBERT H. DEMENT, or HUDSON, ILLINOIS.

Letters Patent No. 113,636, dated April 11, 1871.

IMPROVEMENT IN WAGON-BRAKES.

The Schedule referred to in these Letters Patent and making part of thesame.

ing forming partof this specification, in which Figure l'representsaside "elevation of a'wagon provided with my improved brake.

Figure 2 is an inverted plan view of the same.

Similar letters of reference indicate corresponding parts.

This invention relates to a new self-locking brake, which is applicableto all kinds of wheeled vehicles, such as wagons, carriages, cars,trucks, 850.; and consists in the combination of a series of pivotedshoes with a sliding yoke and eccentric disk on the brakestem, alloperating so that by carrying the wrist-pin in the eccentric ahead of orbehind the axis of the stem the shoes will be locked in their respectiveposition.

The invention consists also in securing the aforesaid yoke to the rod bymeans of nuts to make it adjustable, so that the shoes can be easilyreset when worn.

A in the drawing represents the body or frame of a wagon or otherwheeled vehicle, B B being the wheels of the same.

O is the brake-stem, hung vertically in one end of the body or frame A.and provided with a hand-wheel, a, at the upper end, and with a disk,I), atthe lower end.

D D are the brake-shoes pivoted to the under side of the frame or bodyA.

F is a rod, which connects the yoke E with the disk I). The front end ofthe rod is by a wrist-pin connected with the plate I) so that it will bemoved forward or backward at will by the turning of the stem.

The inner or back end of the rod F is fitted throughthe yoke, and,receives nuts 0 c in front and rear of 2' same, so that it can besecured and adjusted at will.

i The hrake-shoes are applied to the wheels by turning the hand-wheel soas to draw the wrist-pin forward of the stem, a stop-pin, d, on thediskb defining the limit of movement.

When the-brakes are thus applied they are automatically looked, as thewrist-pin cannot be drawn back by adirect pnlronthe connecting-rod, butonly by turning the stem. The brakes are in the same way held and lockedclean of the wheels when the wrist pin is turned inside of the stem.

Having thus described my invention,

I claim as new, and desire to. secure by Letters Patent- 7 1. Thebrake-shoes, combined by the yoke E, rod F, eccentric disk I), and stem0, so that they will be applied and locked by the turning of the stem,as set forth.

2. The yoke E, connecting with the brake-shoes, and secured to the rod Fby means of the nuts 0 c, to he adjustable, as set forth.

ROBERT H. DEMENT.

"Witnesses G. POTTER, J. A. KUHN.

Their inner ends are pivoted to the ends of a yoke,

